<template>
  <a-card :bordered="false">

    <!-- table区域-begin -->
    <div>
      <a-table
        ref="table"
        size="middle"
        rowKey="id"
        :columns="columns"
        :dataSource="dataSource"
        :pagination="false"
        :loading="loading"
        :expandedRowKeys="expandedRowKeys"
        @change="handleTableChange"
        @expand="handleExpand">

        <span slot="action" slot-scope="text, record">
          <a @click="handleEdit(record)">编辑</a>
          <a-divider v-show='record.code.length>3' type="vertical" />
          <a-popconfirm title="确定删除吗?" @confirm="() => handleDelete(record)">
            <a v-show='record.code.length>3'>删除</a>
          </a-popconfirm>
          <a-divider type="vertical" />
          <a @click="handleAddSub(record)">添加下级</a>
        </span>

      </a-table>
    </div>

    <reportCategory-modal ref="modalForm" @ok="modalFormOk"></reportCategory-modal>
  </a-card>
</template>

<script>

import { getAction } from '@api/manage'
import { JeecgListMixin } from '@/mixins/JeecgListMixin'
import ReportCategoryModal from '@views/data-governance/smart-reports/handle-monthly/components/ReportCategoryModal'
import { deleteAction } from '@api/manage'

export default {
  name: "SysCategoryList",
  mixins:[JeecgListMixin],
  components: {
    ReportCategoryModal
  },
  data () {
    return {
      description: '分类字典管理页面',
      // 表头
      columns: [
        {
          title:'分类名称',
          align:"left",
          dataIndex: 'name'
        },
        {
          title:'分类编码',
          align:"left",
          dataIndex: 'code'
        },
        {
          title: '操作',
          dataIndex: 'action',
          align:"center",
          scopedSlots: { customRender: 'action' },
        }
      ],
      url: {
        list: "/sys/category/rootList",
        childList: "/sys/category/childList",
        getChildListBatch: "/sys/category/getChildListBatch",
        delete: "/sys/category/delete",
        deleteBatch: "/sys/category/deleteBatch",
        exportXlsUrl: "/sys/category/exportXls",
        importExcelUrl: "sys/category/importExcel",
      },
      expandedRowKeys:[],
      hasChildrenField:"hasChild",
      pidField:"pid",
      dictOptions:{
      },
      subExpandedKeys:[],
    }
  },
  computed: {
    importExcelUrl(){
      return `${window._CONFIG['domianURL']}/${this.url.importExcelUrl}`;
    },
    tableProps() {
      let _this = this
      return {
        // 列表项是否可选择
        rowSelection: {
          selectedRowKeys: _this.selectedRowKeys,
          onChange: (selectedRowKeys) => _this.selectedRowKeys = selectedRowKeys
        }
      }
    }
  },
  methods: {
    loadData(arg){
      if(arg==1){
        this.ipagination.current=1
      }
      this.loading = true
      let params = this.getQueryParams()
      return new Promise((resolve) => {
        getAction(this.url.list,params).then(res=>{
          if(res.success){
            console.log()
            let result = res.result;
            let records=[]
            if(Number(result.total)>0){
              this.ipagination.total = Number(result.total)
              for (let i=0;i<result.records.length;i++){
                if( res.result.records[i].code==='B03'){
                  records.push(result.records[i])
                }
              }
              this.dataSource = this.getDataByResult(records)
              //update--begin--autor:lvdandan-----date:20201204------for：JT-31 删除成功后默认展开已展开信息
              return this.loadDataByExpandedRows(this.dataSource)
              //update--end--autor:lvdandan-----date:20201204------for：JT-31 删除成功后默认展开已展开信息
            }else{
              this.ipagination.total=0
              this.dataSource=[]
            }
          }else{
            this.$message.warning(res.message)
          }
        }).finally(()=>{
          this.loading = false
        })
      })
    },
    getDataByResult(result){
      console.log(11,result)
      if(result && result.length>0){
        return result.map(item=>{
          //判断是否标记了带有子节点
          if(item[this.hasChildrenField]=='1'){
            let loadChild = { id: item.id+'_loadChild', name: 'loading...', isLoading: true }
            item.children = [loadChild]
          }
          return item
        })
      }
    },
    handleExpand(expanded, record){
      // 判断是否是展开状态
      if (expanded) {
        this.expandedRowKeys.push(record.id)
        if (record.children.length>0 && record.children[0].isLoading === true) {
          let params = this.getQueryParams();//查询条件
          params[this.pidField] = record.id
          getAction(this.url.childList,params).then((res)=>{
            if(res.success){
              if(res.result && res.result.length>0){
                record.children = this.getDataByResult(res.result)
                this.dataSource = [...this.dataSource]
              }else{
                record.children=''
                record.hasChildrenField='0'
              }
            }else{
              this.$message.warning(res.message)
            }
          })
        }
      }else{
        let keyIndex = this.expandedRowKeys.indexOf(record.id)
        if(keyIndex>=0){
          this.expandedRowKeys.splice(keyIndex, 1);
        }
      }
    },
    initDictConfig(){
    },
    modalFormOk(formData,arr){
      if(!formData.id){
        this.addOk(formData,arr)
      }else{
        this.editOk(formData,this.dataSource)
        this.dataSource=[...this.dataSource]
      }
    },
    editOk(formData,arr){
      if(arr && arr.length>0){
        for(let i=0;i<arr.length;i++){
          if(arr[i].id==formData.id){
            arr[i]=formData
            break
          }else{
            this.editOk(formData,arr[i].children)
          }
        }
      }
    },
    async addOk(formData,arr){
      if(!formData[this.pidField]){
        this.loadData()
      }else{
        this.expandedRowKeys=[]
        for(let i of arr){
          await this.expandTreeNode(i)
        }
      }
    },
    expandTreeNode(nodeId){
      return new Promise((resolve,reject)=>{
        this.getFormDataById(nodeId,this.dataSource)
        let row = this.parentFormData
        this.expandedRowKeys.push(nodeId)
        let params = this.getQueryParams();//查询条件
        params[this.pidField] = nodeId
        getAction(this.url.childList,params).then((res)=>{
          if(res.success){
            if(res.result && res.result.length>0){
              row.children = this.getDataByResult(res.result)
              this.dataSource = [...this.dataSource]
              resolve()
            }else{
              row.children=''
              row.hasChildrenField='0'
              reject()
            }
          }else{
            reject()
          }
        })
      })
    },
    getFormDataById(id,arr){
      if(arr && arr.length>0){
        for(let i=0;i<arr.length;i++){
          if(arr[i].id==id){
            this.parentFormData = arr[i]
          }else{
            this.getFormDataById(id,arr[i].children)
          }
        }
      }
    },
    handleAddSub(record){
      this.subExpandedKeys = [];
      this.getExpandKeysByPid(record.id,this.dataSource,this.dataSource)
      this.$refs.modalForm.subExpandedKeys = this.subExpandedKeys;
      this.$refs.modalForm.title = "添加子分类";
      this.$refs.modalForm.edit({'pid':record.id});
      this.$refs.modalForm.disableSubmit = false;
    },
    handleDelete: function (record) {
      let that = this;
      deleteAction(that.url.delete, {id: record.id}).then((res) => {
        if (res.success) {
          //update--begin--autor:lvdandan-----date:20201204------for：JT-31 删除成功后默认展开已展开信息
          that.loadData();
          //update--end--autor:lvdandan-----date:20201204------for：JT-31 删除成功后默认展开已展开信息
        } else {
          that.$message.warning(res.message);
        }
      });
    },
    // 添加子分类时获取所有父级id
    getExpandKeysByPid(pid,arr,all){
      if(pid && arr && arr.length>0){
        for(let i=0;i<arr.length;i++){
          if(arr[i].id==pid){
            this.subExpandedKeys.push(arr[i].id)
            this.getExpandKeysByPid(arr[i]['pid'],all,all)
          }else{
            this.getExpandKeysByPid(pid,arr[i].children,all)
          }
        }
      }
    },
    // 根据已展开的行查询数据（用于保存后刷新时异步加载子级的数据）
    loadDataByExpandedRows(dataList) {
      if (this.expandedRowKeys.length > 0) {
        return getAction(this.url.getChildListBatch,{ parentIds: this.expandedRowKeys.join(',') }).then(res=>{
          if (res.success && res.result.records.length>0) {
            //已展开的数据批量子节点
            let records = res.result.records
            const listMap = new Map();
            for (let item of records) {
              let pid = item[this.pidField];
              if (this.expandedRowKeys.join(',').includes(pid)) {
                let mapList = listMap.get(pid);
                if (mapList == null) {
                  mapList = [];
                }
                mapList.push(item);
                listMap.set(pid, mapList);
              }
            }
            let childrenMap = listMap;
            let fn = (list) => {
              if(list) {
                list.forEach(data => {
                  if (this.expandedRowKeys.includes(data.id)) {
                    data.children = this.getDataByResult(childrenMap.get(data.id))
                    fn(data.children)
                  }
                })
              }
            }
            fn(dataList)
          }
        })
      } else {
        return Promise.resolve()
      }
    },


  }
}
</script>
<style scoped>
@import '~@assets/less/common.less';
</style>